EP1335559A2 - System and method of providing virus protection at a gateway - Google Patents

System and method of providing virus protection at a gateway Download PDF

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Publication number
EP1335559A2
EP1335559A2 EP03001883A EP03001883A EP1335559A2 EP 1335559 A2 EP1335559 A2 EP 1335559A2 EP 03001883 A EP03001883 A EP 03001883A EP 03001883 A EP03001883 A EP 03001883A EP 1335559 A2 EP1335559 A2 EP 1335559A2
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EP
European Patent Office
Prior art keywords
data packets
virus
scanning engine
firewall
destination
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03001883A
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German (de)
French (fr)
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EP1335559A3 (en
EP1335559B1 (en
Inventor
Janne Suuronen
Martin Bergenwall
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Nokia Oyj
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Nokia Oyj
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Publication of EP1335559A2 publication Critical patent/EP1335559A2/en
Publication of EP1335559A3 publication Critical patent/EP1335559A3/en
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Publication of EP1335559B1 publication Critical patent/EP1335559B1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
    • H04L63/0227—Filtering policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
    • H04L63/1408—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic by monitoring network traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/14—Network architectures or network communication protocols for network security for detecting or protecting against malicious traffic
    • H04L63/1441—Countermeasures against malicious traffic
    • H04L63/145—Countermeasures against malicious traffic the attack involving the propagation of malware through the network, e.g. viruses, trojans or worms

Definitions

  • the present invention relates to systems and methods for detecting the presence of computer viruses in data transmissions to networks, and a computer program which when executed detects viruses in the data transmissions to the networks.
  • the Assignee of the present invention sells a Web ShieldTM product for Nokia Appliance V.2 which is a dedicated system optimized with antivirus capability. McAfee® antiviral software is utilized therein to provide complementary protection to existing desktop solutions.
  • the Web ShieldTM stops viruses within data packets at a gateway to a network before penetrating the network.
  • the Web ShieldTM provides an additional layer of protection to existing antiviral software resident on PCs or other computers including servers.
  • the Web Shield stops viruses and malicious code threats, updates the scanning engine automatically with the latest virus definition file, scans inbound and outbound traffic, cleans, rejects or quarantines infected attachments, and has a simple configuration and management.
  • the present invention is a virus protection system, a method of providing virus protection which has an improved performance relative to the Web ShieldTM, and computer program stored on a storage medium for use in a virus scanning engine.
  • the invention permits an early classification of the data packets so that it is possible to also route real-time traffic through a gateway which processes the data packets prior to testing with the virus scanning engine.
  • the early classification improves the performance of the gateway.
  • packets from the virus containing packet stream (or from the originating host) may easily be discarded by use of simple and fast firewall rules that are added when a virus is encountered. If viruses are found, the virus sending processor may be black listed so that no traffic from the virus sending processor passes the firewall in the future.
  • virus includes any form of malicious executable code or malicious data threat including, but not limited to, “viruses” and “worms”.
  • data packets are received by a firewall within a gateway at which they are tested and forwarded to a virus scanning engine.
  • the virus scanning engine determines if the received data packets contain a virus. If so, the tested data packets are discarded and if not the tested data packets are forwarded to their destination to which the transmission of the data packets was made by a first network.
  • the firewall processes the received data packets in accordance with a packet classification criteria provided from a virus detection database to determine the presence of any data packets which cannot contain viruses, such as, but not limited to, audio and video stream data which are immediately forwarded to the destination so as to maintain real time data timing which is critical to data such as, but not limited to, audio and video streams.
  • the virus scanning engine generates an alert which is transmitted to the firewall and the destination.
  • the alert is utilized by the firewall to drop any data packets which are received in a data stream which has been determined to contain a virus. Additionally, the firewall may discard any other packets which are illegal for reasons other than the presence of a virus.
  • a buffer storage is associated with the virus scanning engine which permits the data stream of packets to be sufficiently buffered in order to complete the necessary processing to determine the presence of a virus. Additionally, the virus scanning engine informs the destination of the data packets when the data packets are determined to contain a virus so as to prevent the destination from being infected with the virus.
  • the virus scanning engine is coupled to a virus detection database which provides the necessary programming which is executed by at least one processor of the virus scanning engine for determining the presence of viruses in the data packets.
  • Virus updates are provided to both the packet classification database and virus detection database so as to update the classification of the criteria used by the firewall to determine a first type of data packets which are immediately transmitted by the firewall to the destination for the reason that they are determined to not contain a virus and the second type of data packets which are forwarded from the firewall and received by the virus scanning engine at which they are tested to determine if they contain a virus.
  • the virus detection database provides the latest antivirus detection programming to the at least one processor of virus scanning engine and may use any known type of anti-virus programming.
  • a system for providing virus protection in accordance with the invention includes a gateway coupled between the first network and the destination, which includes a firewall which receives the data packets and virus scanning engine, coupled to the firewall, which receives the data packets after reception by the firewall, tests the data packets, passes any data packets, which are tested to not contain a virus to the destination and discards any data packets which are tested o contain a virus.
  • the firewall may classify the received data packets into packets of a first type which cannot contain a virus and second type which can contain a virus and may forward the data packets of the first type to the destination without testing by the virus scanning engine and may forward the data packets of the second type to the virus scanning engine for testing thereof.
  • the virus scanning engine may test the data packets of the second type and may forward those data packets of the second type which are tested to not contain a virus to the destination.
  • the data packets of the first type may contain real time data.
  • the virus scanning engine may, when a virus is detected, alert the firewall that a virus has been detected which, in response to the alert, may stop reception of a data stream containing the data packets.
  • a buffer may store the data packets of the second type while the virus scanning engine is processing the data packets of the second type to detect a virus.
  • the firewall may drop any received data packets which are tested to be illegal according to firewall rules.
  • a packet classification database coupled to the firewall, may provide information to the firewall which defines the first and second types of data packets; and a virus detection database, coupled to the virus scanning engine, may provide programming controlling the testing of the data packets of the second type by the virus scanning engine.
  • the virus scanning engine upon detection of a virus in the data packets, may also alert the destination that a virus has been detected.
  • the destination may be a local area network, a personal computer, or a second network.
  • the first network may be a wide area network which may be the Internet.
  • the first network may be the Internet; and the destination may comprise an Internet service provider coupled to the gateway, a modem coupled to the Internet service provider and one of a local area or personal computer coupled to the modem.
  • the virus scanning engine may decode the data packets during determination if the data packets contain a virus.
  • the virus scanning engine may function as a proxy for a destination processor which receives the data packets.
  • a method in accordance with the invention includes receiving the data packets at the firewall; transmitting the received data packets from the firewall to the virus scanning engine; testing the data packets with the virus scanning engine; and transmitting from the virus scanning engine any data packets which are tested by the virus scanning engine to not contain any virus to the destination and the discarding any data packets which are tested to contain a virus.
  • a computer program stored on a storage medium for use in a virus scanning engine in a communication system including at least a first network coupled to a destination to which transmissions of data packets are made from the first network to the destination, a gateway coupled between the first network and the destination, which includes a firewall which receives the data packets and the virus scanning engine, coupled to the firewall, which receives the data packets after reception by the firewall, passes any data packets, which are tested to not contain a virus to the destination and discards any data packets which are tested to contain a virus, in accordance with the invention when executed causes the virus scanning engine to execute at least one step of testing the data packets for the presence of a virus.
  • the firewall may classify the received data packets into packets of a first type which cannot contain a virus and second type which can contain a virus and may forward the data packets of the first type to the destination without testing by the virus scanning engine and may forward the data packets of the second type to the virus scanning engine for testing thereof and wherein the computer program when executed causes the virus scanning engine to test the data packets of the second type and causes the virus scanning engine to forward those data packets which are tested to not contain a virus to the destination.
  • the computer program when executed may cause the virus scanning engine to forward any data packets, which are tested to not contain a virus to the destination and may cause the virus scanning engine to discard any data packets which contain a virus.
  • the data packets of the first type may contain real time data.
  • the computer program when executed, may cause the virus scanning engine, when a virus is detected, to alert the firewall that a virus has been detected which, in response to the alert, stops reception of a data stream containing the data packets.
  • the firewall may drop any received data packets which are tested to be illegal according to firewall rules, a packet classification database may be coupled to the firewall which provides information to the firewall which defines the first and second types of data packets and a virus detection database may be coupled to the virus scanning engine and wherein the computer program controlling the testing of the data packets of the second type by the virus scanning engine may be provided by the virus detection database.
  • Fig. 1 illustrates a block diagram of an exemplary system in which the present invention may be practiced.
  • Fig. 2 illustrates a block diagram of a first network in which the present invention may be practiced.
  • Fig. 3 illustrates a block diagram of a second network in which the present invention may be practiced.
  • Fig. 4 illustrates a block diagram of a third network in which the present invention may be practiced.
  • Fig. 5 illustrates a block diagram of a fourth network in which the present invention may be practiced therein.
  • FIG. 1 illustrates a block diagram of a system 10 in which the present invention is practiced.
  • a first network 11 which may be of any known design, provides data packets including, but not limited to, data packets transmitted by the TCP/IP protocol to a gateway 12 which includes a firewall 14 which may be of any known design that receives the data packets.
  • the data packets received by the firewall 14 are processed in accordance with a packet classification criteria which is stored in a packet classification database 16.
  • the data packets are classified by the firewall 12 into a first type of data packets which cannot contain a virus in accordance with criteria specified by the packet classification database 16 and typically without limitation represent real time data.
  • Those data packets of the first type which are determined as not possibly containing a virus are transmitted from the firewall 14 to their destination 18 including, but not limited to, the destinations set forth in the network architectures of Figs. 2-5 as described below.
  • data packets of the first type which are screened in accordance with the packet classification criteria provided by the packet classification database 16, are audio and video data streams.
  • the output 20 is representative of n multiple ports from the firewall 14 with the payload of the data being provided on one or more output ports and further, additional information, not constituting the payload, which is used for setting up of the data transmission session being outputted on other ports 20.
  • the firewall 14 forwards those data packets of the second type which may contain viruses to a virus scanning engine 22 of any known design at which at least one processor therein executes a computer program stored on any known type of storage medium as described below.
  • the processing of the data packets by the firewall 14 to divide them into first and second types provides an early classification of the packets so that real-time data traffic may be routed through the gateway to eliminate transmission of data packets to the virus scanning engine 22 which can reliably be determined to not contain viruses and which would slow down testing by the gateway 12 for viruses if forwarded to the virus scanning engine.
  • Early classification improves the performance of the gateway 12 and further permits data packets from the virus containing packet stream (or from the originating host) to be readily discarded by use of simple and fast firewall rules that are added when a virus is encountered. If viruses are found, the virus sending processor may be black listed so that no traffic from the virus sending processor passes the firewall in the future.
  • the virus scanning engine 22 contains at least one processor which executes a program stored on a storage medium of any known type.
  • the execution of the computer program causes processing of the data packets transmitted from the firewall 14 to the virus scanning engine 22 with virus detection criteria specified by virus detection database 24.
  • the program may in addition control all facets of the operation of the virus scanning engine 22, as discussed below, including the reception of data packets of the second type from the firewall 14, the testing thereof, and the outputting of virus free packets and a virus alert to the firewall 14 and the destination 18 and control of communications between the virus detection database 24 and packet temporary storage 26.
  • the virus detection database 24 is dynamically updated with virus updates which also update the packet classification database 16 to permit the criteria for screening the data packets into the first and second types to be dynamically varied to respond to changing or new viruses and data defining the first type or second types such as new types of data, which may be screened to determine that they do not contain viruses.
  • the virus scanning engine 22 outputs the tested virus free data packets to the destination 18.
  • a packet temporary storage 26 is associated with the virus scanning engine 22 to provide a buffer to permit storage of a sufficient number of data packets within a data stream being tested so as to permit determination if a data stream of data packets of the second type may be correctly determined to be virus free.
  • an alert 28 is generated which is transmitted back to the firewall 14 and further to the destination 18.
  • the alert 28, when transmitted to the firewall 14, provides a basis for instructing the firewall to drop data packets being received in the data stream which are determined to contain a virus. Additionally, the firewall 14 may drop data packets for other reasons in accordance with firewall rules.
  • the main benefit of the firewall is to control and prevent outsiders from accessing the protected network (usually a LAN) behind the firewall.
  • the data security inside the LAN does not have to be state-of-the-art if the firewall that connects the LAN, to the Internet or other wide area network, is robust.
  • the firewall typically prevents data connections to be opened from the Internet or other wide area network and protects the machines in the LAN from different types of attacks (e.g. port scanning, Denial-of-Service attacks, etc.).
  • the packet classification database 16 contains protocols, ports, packet lengths and other packet characteristics which are used collectively by the firewall 14 to perform the screening of the data packets so as to correctly identify those data packets of the first type which may be passed to the destination 18 on a real time basis and the data packets of the second type which are transmitted to the virus scanning engine 22 for testing for the presence of viruses. Additional information beyond that stored in the packet classification data base 16 may be used by the firewall 14 in determining if the received data packets are of the first type.
  • the packet temporary storage 26 has substantial capacity so as to permit a total data stream to be buffered when required for correct identification of a virus. But, in most applications, it is necessary only to test a much smaller number of data packets in while using the packet temporary storage 26 to determine whether the second type of data packets contain any viruses.
  • the virus scanning engine 22 acts as a proxy for the destination and may decode the data stream before forwarding to the destination 18. This may involve splitting of a TCP session or temporarily redirecting it to another location.
  • Fig. 2 illustrates a first network 100 in which the present invention may be practiced.
  • the gateway 12 is coupled between the Internet 102 and a local area network 104.
  • Fig. 3 illustrates a second network 200 in which the present invention may be practiced.
  • the gateway 12 is coupled between the Internet 102 and a PC 202.
  • Fig. 4 illustrates a third network 300 in which the present invention may be practiced.
  • the gateway 12 is coupled between a first network of any known design 302 and a second network 304 of any known design.
  • Fig. 5 illustrates a fourth network 400 in which the present invention may be practiced.
  • the gateway 12 is coupled between the Internet 102 and an Internet service provider 400.
  • the Internet service provider 402 is coupled via modem 402 to one of a local area network or PC 104 and 202 respectively.

Abstract

The present invention is a system, a method for providing virus protection, and a computer program stored on a storage medium in a communication system (10) including at least a first network (11) coupled to a destination (18) to which transmissions of data packets are made from the first network to the destination. A virus protection system in accordance with the invention includes a gateway (12), coupled between the first network and the destination, which includes a firewall (14) which receives data packets and a virus scanning engine (22), coupled to the firewall, which receives the data packets after reception by the firewall, tests the data packets, passes any data packets, which are tested by the virus scanning engine to not contain a virus to the destination and discards any data packets which are tested by the virus scanning engine to contain a virus.

Description

    BACKGROUND OF THE INVENTION Field of the Invention
  • The present invention relates to systems and methods for detecting the presence of computer viruses in data transmissions to networks, and a computer program which when executed detects viruses in the data transmissions to the networks.
    • Description of the Prior Art
  • The Assignee of the present invention sells a Web Shield™ product for Nokia Appliance V.2 which is a dedicated system optimized with antivirus capability. McAfee® antiviral software is utilized therein to provide complementary protection to existing desktop solutions. The Web Shield™ stops viruses within data packets at a gateway to a network before penetrating the network. As a result, the deficiencies of prior art desktop and server-based antiviral systems, which degrade performance of multipurpose systems, is avoided with the attendant potential for the multipurpose systems being compromised being eliminated. The Web Shield™ provides an additional layer of protection to existing antiviral software resident on PCs or other computers including servers.
  • The Web Shield stops viruses and malicious code threats, updates the scanning engine automatically with the latest virus definition file, scans inbound and outbound traffic, cleans, rejects or quarantines infected attachments, and has a simple configuration and management.
  • United States Patents 5,414,833, 5,623,600 and 6,275,942 disclose additional antivirus systems.
    • SUMMARY OF THE INVENTION
  • The present invention is a virus protection system, a method of providing virus protection which has an improved performance relative to the Web Shield™, and computer program stored on a storage medium for use in a virus scanning engine. The invention permits an early classification of the data packets so that it is possible to also route real-time traffic through a gateway which processes the data packets prior to testing with the virus scanning engine. The early classification improves the performance of the gateway. Furthermore, packets from the virus containing packet stream (or from the originating host) may easily be discarded by use of simple and fast firewall rules that are added when a virus is encountered. If viruses are found, the virus sending processor may be black listed so that no traffic from the virus sending processor passes the firewall in the future.
  • As used herein, the term "virus" includes any form of malicious executable code or malicious data threat including, but not limited to, "viruses" and "worms".
  • In accordance with the present invention, data packets are received by a firewall within a gateway at which they are tested and forwarded to a virus scanning engine. The virus scanning engine determines if the received data packets contain a virus. If so, the tested data packets are discarded and if not the tested data packets are forwarded to their destination to which the transmission of the data packets was made by a first network. Additionally, the firewall processes the received data packets in accordance with a packet classification criteria provided from a virus detection database to determine the presence of any data packets which cannot contain viruses, such as, but not limited to, audio and video stream data which are immediately forwarded to the destination so as to maintain real time data timing which is critical to data such as, but not limited to, audio and video streams. The virus scanning engine generates an alert which is transmitted to the firewall and the destination. The alert is utilized by the firewall to drop any data packets which are received in a data stream which has been determined to contain a virus. Additionally, the firewall may discard any other packets which are illegal for reasons other than the presence of a virus. A buffer storage is associated with the virus scanning engine which permits the data stream of packets to be sufficiently buffered in order to complete the necessary processing to determine the presence of a virus. Additionally, the virus scanning engine informs the destination of the data packets when the data packets are determined to contain a virus so as to prevent the destination from being infected with the virus. The virus scanning engine is coupled to a virus detection database which provides the necessary programming which is executed by at least one processor of the virus scanning engine for determining the presence of viruses in the data packets. Virus updates are provided to both the packet classification database and virus detection database so as to update the classification of the criteria used by the firewall to determine a first type of data packets which are immediately transmitted by the firewall to the destination for the reason that they are determined to not contain a virus and the second type of data packets which are forwarded from the firewall and received by the virus scanning engine at which they are tested to determine if they contain a virus. The virus detection database provides the latest antivirus detection programming to the at least one processor of virus scanning engine and may use any known type of anti-virus programming.
  • In a communication system including at least a first network coupled to a destination to which transmissions of the data packets are made from the first network to the destination, a system for providing virus protection in accordance with the invention includes a gateway coupled between the first network and the destination, which includes a firewall which receives the data packets and virus scanning engine, coupled to the firewall, which receives the data packets after reception by the firewall, tests the data packets, passes any data packets, which are tested to not contain a virus to the destination and discards any data packets which are tested o contain a virus. The firewall may classify the received data packets into packets of a first type which cannot contain a virus and second type which can contain a virus and may forward the data packets of the first type to the destination without testing by the virus scanning engine and may forward the data packets of the second type to the virus scanning engine for testing thereof. The virus scanning engine may test the data packets of the second type and may forward those data packets of the second type which are tested to not contain a virus to the destination. The data packets of the first type may contain real time data. The virus scanning engine may, when a virus is detected, alert the firewall that a virus has been detected which, in response to the alert, may stop reception of a data stream containing the data packets. A buffer may store the data packets of the second type while the virus scanning engine is processing the data packets of the second type to detect a virus. The firewall may drop any received data packets which are tested to be illegal according to firewall rules. A packet classification database, coupled to the firewall, may provide information to the firewall which defines the first and second types of data packets; and a virus detection database, coupled to the virus scanning engine, may provide programming controlling the testing of the data packets of the second type by the virus scanning engine. The virus scanning engine, upon detection of a virus in the data packets, may also alert the destination that a virus has been detected. The destination may be a local area network, a personal computer, or a second network. The first network may be a wide area network which may be the Internet. The first network may be the Internet; and the destination may comprise an Internet service provider coupled to the gateway, a modem coupled to the Internet service provider and one of a local area or personal computer coupled to the modem. The virus scanning engine may decode the data packets during determination if the data packets contain a virus. The virus scanning engine may function as a proxy for a destination processor which receives the data packets.
  • In a communication system including at least a first network coupled to a destination to which transmissions of data packets are made from the first network to the destination, a gateway coupled between the first network and the destination which includes a firewall which receives the data packets and a virus scanning engine, a method in accordance with the invention includes receiving the data packets at the firewall; transmitting the received data packets from the firewall to the virus scanning engine; testing the data packets with the virus scanning engine; and transmitting from the virus scanning engine any data packets which are tested by the virus scanning engine to not contain any virus to the destination and the discarding any data packets which are tested to contain a virus.
  • A computer program stored on a storage medium for use in a virus scanning engine in a communication system including at least a first network coupled to a destination to which transmissions of data packets are made from the first network to the destination, a gateway coupled between the first network and the destination, which includes a firewall which receives the data packets and the virus scanning engine, coupled to the firewall, which receives the data packets after reception by the firewall, passes any data packets, which are tested to not contain a virus to the destination and discards any data packets which are tested to contain a virus, in accordance with the invention when executed causes the virus scanning engine to execute at least one step of testing the data packets for the presence of a virus. The firewall may classify the received data packets into packets of a first type which cannot contain a virus and second type which can contain a virus and may forward the data packets of the first type to the destination without testing by the virus scanning engine and may forward the data packets of the second type to the virus scanning engine for testing thereof and wherein the computer program when executed causes the virus scanning engine to test the data packets of the second type and causes the virus scanning engine to forward those data packets which are tested to not contain a virus to the destination. The computer program when executed may cause the virus scanning engine to forward any data packets, which are tested to not contain a virus to the destination and may cause the virus scanning engine to discard any data packets which contain a virus. The data packets of the first type may contain real time data. The computer program, when executed, may cause the virus scanning engine, when a virus is detected, to alert the firewall that a virus has been detected which, in response to the alert, stops reception of a data stream containing the data packets. The firewall may drop any received data packets which are tested to be illegal according to firewall rules, a packet classification database may be coupled to the firewall which provides information to the firewall which defines the first and second types of data packets and a virus detection database may be coupled to the virus scanning engine and wherein the computer program controlling the testing of the data packets of the second type by the virus scanning engine may be provided by the virus detection database.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Fig. 1 illustrates a block diagram of an exemplary system in which the present invention may be practiced.
  • Fig. 2 illustrates a block diagram of a first network in which the present invention may be practiced.
  • Fig. 3 illustrates a block diagram of a second network in which the present invention may be practiced.
  • Fig. 4 illustrates a block diagram of a third network in which the present invention may be practiced.
  • Fig. 5 illustrates a block diagram of a fourth network in which the present invention may be practiced therein.
  • Like reference numerals identify like parts throughout the drawings.
    • DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Fig. 1 illustrates a block diagram of a system 10 in which the present invention is practiced. A first network 11, which may be of any known design, provides data packets including, but not limited to, data packets transmitted by the TCP/IP protocol to a gateway 12 which includes a firewall 14 which may be of any known design that receives the data packets. The data packets received by the firewall 14 are processed in accordance with a packet classification criteria which is stored in a packet classification database 16. The data packets are classified by the firewall 12 into a first type of data packets which cannot contain a virus in accordance with criteria specified by the packet classification database 16 and typically without limitation represent real time data. Those data packets of the first type which are determined as not possibly containing a virus are transmitted from the firewall 14 to their destination 18 including, but not limited to, the destinations set forth in the network architectures of Figs. 2-5 as described below. Without limitation, data packets of the first type, which are screened in accordance with the packet classification criteria provided by the packet classification database 16, are audio and video data streams. The output 20 is representative of n multiple ports from the firewall 14 with the payload of the data being provided on one or more output ports and further, additional information, not constituting the payload, which is used for setting up of the data transmission session being outputted on other ports 20. The firewall 14 forwards those data packets of the second type which may contain viruses to a virus scanning engine 22 of any known design at which at least one processor therein executes a computer program stored on any known type of storage medium as described below.
  • The processing of the data packets by the firewall 14 to divide them into first and second types provides an early classification of the packets so that real-time data traffic may be routed through the gateway to eliminate transmission of data packets to the virus scanning engine 22 which can reliably be determined to not contain viruses and which would slow down testing by the gateway 12 for viruses if forwarded to the virus scanning engine. Early classification improves the performance of the gateway 12 and further permits data packets from the virus containing packet stream (or from the originating host) to be readily discarded by use of simple and fast firewall rules that are added when a virus is encountered. If viruses are found, the virus sending processor may be black listed so that no traffic from the virus sending processor passes the firewall in the future.
  • The virus scanning engine 22 contains at least one processor which executes a program stored on a storage medium of any known type. The execution of the computer program causes processing of the data packets transmitted from the firewall 14 to the virus scanning engine 22 with virus detection criteria specified by virus detection database 24. The program may in addition control all facets of the operation of the virus scanning engine 22, as discussed below, including the reception of data packets of the second type from the firewall 14, the testing thereof, and the outputting of virus free packets and a virus alert to the firewall 14 and the destination 18 and control of communications between the virus detection database 24 and packet temporary storage 26. The virus detection database 24 is dynamically updated with virus updates which also update the packet classification database 16 to permit the criteria for screening the data packets into the first and second types to be dynamically varied to respond to changing or new viruses and data defining the first type or second types such as new types of data, which may be screened to determine that they do not contain viruses. The virus scanning engine 22 outputs the tested virus free data packets to the destination 18. A packet temporary storage 26 is associated with the virus scanning engine 22 to provide a buffer to permit storage of a sufficient number of data packets within a data stream being tested so as to permit determination if a data stream of data packets of the second type may be correctly determined to be virus free. If the virus scanning engine 22 detects the presence of a virus within the second type of data packets, an alert 28 is generated which is transmitted back to the firewall 14 and further to the destination 18. The alert 28, when transmitted to the firewall 14, provides a basis for instructing the firewall to drop data packets being received in the data stream which are determined to contain a virus. Additionally, the firewall 14 may drop data packets for other reasons in accordance with firewall rules. The main benefit of the firewall is to control and prevent outsiders from accessing the protected network (usually a LAN) behind the firewall. The data security inside the LAN does not have to be state-of-the-art if the firewall that connects the LAN, to the Internet or other wide area network, is robust. The firewall typically prevents data connections to be opened from the Internet or other wide area network and protects the machines in the LAN from different types of attacks (e.g. port scanning, Denial-of-Service attacks, etc.). The packet classification database 16 contains protocols, ports, packet lengths and other packet characteristics which are used collectively by the firewall 14 to perform the screening of the data packets so as to correctly identify those data packets of the first type which may be passed to the destination 18 on a real time basis and the data packets of the second type which are transmitted to the virus scanning engine 22 for testing for the presence of viruses. Additional information beyond that stored in the packet classification data base 16 may be used by the firewall 14 in determining if the received data packets are of the first type. As a result, real time video and audio streams and any other real time data which cannot contain viruses are not delayed by the virus scanning engine 22 so as to provide optimized performance. Moreover, eliminating data streams which contain data packets which are determined correctly as not being capable of containing viruses lessens the overhead on the testing process performed by the at least one processor executing the programming within virus scanning engine 22.
  • As a result of the splitting of the data packets into first and second types, which are respectively directly forwarded to the destination 18 and to the virus scanning engine 22, enhanced efficiency is obtained while permitting correct identification of data packets which contain viruses. Moreover, the packet temporary storage 26 has substantial capacity so as to permit a total data stream to be buffered when required for correct identification of a virus. But, in most applications, it is necessary only to test a much smaller number of data packets in while using the packet temporary storage 26 to determine whether the second type of data packets contain any viruses.
  • When the packet temporary storage 26 stores a total data stream, the virus scanning engine 22 acts as a proxy for the destination and may decode the data stream before forwarding to the destination 18. This may involve splitting of a TCP session or temporarily redirecting it to another location.
  • Fig. 2 illustrates a first network 100 in which the present invention may be practiced. The gateway 12 is coupled between the Internet 102 and a local area network 104.
  • Fig. 3 illustrates a second network 200 in which the present invention may be practiced. The gateway 12 is coupled between the Internet 102 and a PC 202.
  • Fig. 4 illustrates a third network 300 in which the present invention may be practiced. The gateway 12 is coupled between a first network of any known design 302 and a second network 304 of any known design.
  • Fig. 5 illustrates a fourth network 400 in which the present invention may be practiced. The gateway 12 is coupled between the Internet 102 and an Internet service provider 400. The Internet service provider 402 is coupled via modem 402 to one of a local area network or PC 104 and 202 respectively.
  • While the invention has been described in terms of its preferred embodiments, it should be understood that numerous modifications may be made thereto without departing from the spirit and scope of the present invention. It is intended that all such modifications fall within the scope of the appended claims.

Claims (14)

  1. In a communication system including at least a first network coupled to a destination to which transmissions of data packets are made from the first network to the destination, a system for providing virus protection comprising:
    a gateway coupled between the first network and the destination, which includes a firewall which receives the data packets and virus scanning engine, coupled to the firewall, which receives the data packets after reception by the firewall, tests the data packets, passes any data packets, which are tested to not contain a virus to the destination and discards any data packets which are tested o contain a virus.
  2. A system in accordance with claim 1, wherein:
    the firewall classifies the received data packets into packets of a first type which cannot contain a virus and second type which can contain a virus and forwards the data packets of the first type to the destination without testing by the virus scanning engine and forwards the data packets of the second type to the virus scanning engine for testing thereof.
  3. A system in accordance with claim 2, wherein:
    the virus scanning engine tests the data packets of the second type and forwards those data packets which are tested to not contain a virus to the destination.
  4. A system in accordance with claims 2 and 3, wherein:
    the data packets of the first type contain real time data.
  5. A system in accordance with claims 1-4, wherein:
    the virus scanning engine, when a virus is detected, alerts the firewall that a virus has been detected which, in response to the alert, stops reception of a data stream containing the data packets.
  6. A system in accordance with claims 2-5 comprising:
    a buffer which stores the data packets of the second type while the virus scanning engine is processing the data packets of the second type to detect a virus.
  7. A system in accordance with claims 1-6 comprising:
    the firewall drops any received data packets which are tested to be illegal according to firewall rules.
  8. A system in accordance with claims 1-7 comprising:
    a packet classification database, coupled to the firewall, which provides information to the firewall which defines the first and second types of data packets; and
    a virus detection database, coupled to the virus scanning engine, which provides programming controlling the testing of the data packets of the second type by the virus scanning engine.
  9. A system in accordance with claim 1, wherein:
    the virus scanning engine, upon detection of a virus in the data packets, also alerts the destination that a virus has been detected.
  10. A system in accordance with claim 1 wherein:
    the destination is one of a local area network, a personal computer, a second network, a wide area network, or the Internet.
  11. A system in accordance with claim 1, wherein:
    the first network is the Internet; and
    the destination comprises an Internet service provider coupled to the gateway, a modem coupled to the Internet service provider and one of a local area or personal computer coupled to the modem.
  12. A system in accordance with claim 1, wherein:
    the virus scanning engine decodes the data packets during determination if the data packets contain a virus.
  13. A system in accordance with claim 12, wherein:
    the virus scanning engine functions as a proxy for a destination processor which receives the data packets.
  14. In a communication system including at least a first network coupled to a destination to which transmissions of data packets are made from the first network to the destination, a gateway coupled between the first network and the destination which includes a firewall which receives the data packets and a virus scanning engine, a method comprising:
    receiving the data packets at the firewall;
    transmitting the received data packets from the firewall to the virus scanning engine;
    testing the data packets with the virus scanning engine; and
    transmitting from the virus scanning engine any data packets which are tested by the virus scanning engine to not contain any virus to the destination and the discarding any data packets which are tested to contain a virus.
EP03001883A 2002-01-31 2003-01-29 System and method of providing virus protection at a gateway Expired - Lifetime EP1335559B1 (en)

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US10/059,182 US9392002B2 (en) 2002-01-31 2002-01-31 System and method of providing virus protection at a gateway

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005022441A2 (en) * 2003-08-29 2005-03-10 Trend Micro Incorporated Network traffic management by a virus/worm monitor in a distributed network
WO2005086455A2 (en) * 2004-03-01 2005-09-15 Everbee Networks Method, system and device for time-delaying a data packet flow
EP1737172A1 (en) * 2004-05-31 2006-12-27 Japan Science and Technology Agency Relay device, packet filtering method, and packet filtering program
WO2007038517A1 (en) * 2005-09-26 2007-04-05 Wiresoft, Inc. Methods, software and apparatus for detecting and neutralizing viruses from computer systems and networks
EP1804457A1 (en) * 2005-12-28 2007-07-04 Zyxel Communications Corporation Terminal and related computer implemented method for detecting malicious data for computer network
EP1853025A1 (en) * 2006-05-05 2007-11-07 Broadcom Corporation Packet routing with payload analysis, encapsulation and service module vectoring
EP1853022A1 (en) * 2006-05-05 2007-11-07 Broadcom Corporation Switching network employing virus detection
WO2009059206A1 (en) * 2007-10-31 2009-05-07 Bank Of America Corporation Executable download tracking system
US7596137B2 (en) 2006-05-05 2009-09-29 Broadcom Corporation Packet routing and vectoring based on payload comparison with spatially related templates
US7751397B2 (en) 2006-05-05 2010-07-06 Broadcom Corporation Switching network employing a user challenge mechanism to counter denial of service attacks
US8223965B2 (en) 2006-05-05 2012-07-17 Broadcom Corporation Switching network supporting media rights management
US8544100B2 (en) 2010-04-16 2013-09-24 Bank Of America Corporation Detecting secure or encrypted tunneling in a computer network
US8782209B2 (en) 2010-01-26 2014-07-15 Bank Of America Corporation Insider threat correlation tool
US8793789B2 (en) 2010-07-22 2014-07-29 Bank Of America Corporation Insider threat correlation tool
US8800034B2 (en) 2010-01-26 2014-08-05 Bank Of America Corporation Insider threat correlation tool
US9038187B2 (en) 2010-01-26 2015-05-19 Bank Of America Corporation Insider threat correlation tool

Families Citing this family (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080207178A1 (en) * 1997-07-30 2008-08-28 Steven Tischer Apparatus and method for restricting access to data
US20080192768A1 (en) * 1997-07-30 2008-08-14 Steven Tischer Apparatus, method, and computer-readable medium for interfacing communication devices
US20080207197A1 (en) 1997-07-30 2008-08-28 Steven Tischer Apparatus, method, and computer-readable medium for interfacing devices with communications networks
US7149514B1 (en) 1997-07-30 2006-12-12 Bellsouth Intellectual Property Corp. Cellular docking station
US20080194208A1 (en) * 1997-07-30 2008-08-14 Steven Tischer Apparatus, method, and computer-readable medium for communicating between and controlling network devices
US20080207179A1 (en) * 1997-07-30 2008-08-28 Steven Tischer Apparatus and method for testing communication capabilities of networks and devices
US20080220775A1 (en) * 1997-07-30 2008-09-11 Steven Tischer Apparatus, method, and computer-readable medium for securely providing communications between devices and networks
US20080194225A1 (en) * 1997-07-30 2008-08-14 Steven Tischer Apparatus and method for providing emergency and alarm communications
US8090816B1 (en) * 2002-02-07 2012-01-03 Mcafee, Inc. System and method for real-time triggered event upload
US8543098B2 (en) 2002-07-15 2013-09-24 At&T Intellectual Property I, L.P. Apparatus and method for securely providing communications between devices and networks
US8554187B2 (en) 2002-07-15 2013-10-08 At&T Intellectual Property I, L.P. Apparatus and method for routing communications between networks and devices
US8416804B2 (en) 2002-07-15 2013-04-09 At&T Intellectual Property I, L.P. Apparatus and method for providing a user interface for facilitating communications between devices
US8275371B2 (en) 2002-07-15 2012-09-25 At&T Intellectual Property I, L.P. Apparatus and method for providing communications and connection-oriented services to devices
US7200424B2 (en) 2002-07-15 2007-04-03 Bellsouth Intelectual Property Corporation Systems and methods for restricting the use and movement of telephony devices
US8526466B2 (en) 2002-07-15 2013-09-03 At&T Intellectual Property I, L.P. Apparatus and method for prioritizing communications between devices
US8000682B2 (en) 2002-07-15 2011-08-16 At&T Intellectual Property I, L.P. Apparatus and method for restricting access to data
US7519990B1 (en) * 2002-07-19 2009-04-14 Fortinet, Inc. Managing network traffic flow
US7761917B1 (en) * 2002-11-21 2010-07-20 Vmware, Inc. Method and apparatus for the detection and prevention of intrusions, computer worms, and denial of service attacks
US20060242686A1 (en) * 2003-02-21 2006-10-26 Kenji Toda Virus check device and system
US20040223486A1 (en) * 2003-05-07 2004-11-11 Jan Pachl Communication path analysis
US8627457B2 (en) * 2003-06-30 2014-01-07 Verizon Business Global Llc Integrated security system
US9100431B2 (en) 2003-07-01 2015-08-04 Securityprofiling, Llc Computer program product and apparatus for multi-path remediation
US8984644B2 (en) 2003-07-01 2015-03-17 Securityprofiling, Llc Anti-vulnerability system, method, and computer program product
US9118708B2 (en) 2003-07-01 2015-08-25 Securityprofiling, Llc Multi-path remediation
US9118710B2 (en) 2003-07-01 2015-08-25 Securityprofiling, Llc System, method, and computer program product for reporting an occurrence in different manners
US9118711B2 (en) 2003-07-01 2015-08-25 Securityprofiling, Llc Anti-vulnerability system, method, and computer program product
US9350752B2 (en) 2003-07-01 2016-05-24 Securityprofiling, Llc Anti-vulnerability system, method, and computer program product
US9118709B2 (en) 2003-07-01 2015-08-25 Securityprofiling, Llc Anti-vulnerability system, method, and computer program product
US20070113272A2 (en) 2003-07-01 2007-05-17 Securityprofiling, Inc. Real-time vulnerability monitoring
US20070118756A2 (en) * 2003-07-01 2007-05-24 Securityprofiling, Inc. Policy-protection proxy
US8634309B2 (en) 2003-07-10 2014-01-21 Mcafee, Inc. Security network processor system and method
US8127356B2 (en) * 2003-08-27 2012-02-28 International Business Machines Corporation System, method and program product for detecting unknown computer attacks
EP1665715B1 (en) * 2003-09-11 2019-05-22 Bae Systems Plc Real-time network monitoring and security
US7496961B2 (en) * 2003-10-15 2009-02-24 Intel Corporation Methods and apparatus to provide network traffic support and physical security support
US7310815B2 (en) * 2003-10-29 2007-12-18 Sonicwall, Inc. Method and apparatus for datastream analysis and blocking
US8356349B2 (en) * 2003-10-30 2013-01-15 Telecom Italia S.P.A. Method and system for intrusion prevention and deflection
US7814543B2 (en) * 2004-02-13 2010-10-12 Microsoft Corporation System and method for securing a computer system connected to a network from attacks
US7716726B2 (en) * 2004-02-13 2010-05-11 Microsoft Corporation System and method for protecting a computing device from computer exploits delivered over a networked environment in a secured communication
US8074277B2 (en) * 2004-06-07 2011-12-06 Check Point Software Technologies, Inc. System and methodology for intrusion detection and prevention
US20050277421A1 (en) * 2004-06-15 2005-12-15 Ng Vincent K Alarm transmission system and method
US7568231B1 (en) * 2004-06-24 2009-07-28 Mcafee, Inc. Integrated firewall/virus scanner system, method, and computer program product
US20060010495A1 (en) * 2004-07-06 2006-01-12 Oded Cohen Method for protecting a computer from suspicious objects
US8667590B1 (en) 2004-08-20 2014-03-04 Trend Micro Incorporated Method and apparatus for protecting high availability devices from computer viruses and other malicious content
US7869790B2 (en) 2004-09-24 2011-01-11 Scenera Technologies, Llc Policy-based controls for wireless cameras
US7835361B1 (en) 2004-10-13 2010-11-16 Sonicwall, Inc. Method and apparatus for identifying data patterns in a file
US7600257B2 (en) 2004-10-13 2009-10-06 Sonicwall, Inc. Method and an apparatus to perform multiple packet payloads analysis
US7716727B2 (en) * 2004-10-29 2010-05-11 Microsoft Corporation Network security device and method for protecting a computing device in a networked environment
US7836499B1 (en) * 2004-11-18 2010-11-16 Symantec Corporation Dynamic depth inspection
US20060112430A1 (en) * 2004-11-19 2006-05-25 Deisenroth Jerrold M Method and apparatus for immunizing data in computer systems from corruption
WO2006060581A2 (en) * 2004-11-30 2006-06-08 Sensory Networks Inc. Apparatus and method for acceleration of security applications through pre-filtering
KR20060062500A (en) * 2004-12-03 2006-06-12 현대자동차주식회사 Lead-acid battery for automobile
WO2006063052A1 (en) * 2004-12-07 2006-06-15 Nortel Networks Limited Method and apparatus for network immunization
US7343599B2 (en) * 2005-01-03 2008-03-11 Blue Lane Technologies Inc. Network-based patching machine
US7716741B2 (en) * 2005-01-12 2010-05-11 International Business Machines Corporation Method and system for offloading real-time virus scanning during data transfer to storage peripherals
US7882561B2 (en) * 2005-01-31 2011-02-01 Microsoft Corporation System and method of caching decisions on when to scan for malware
US8145241B2 (en) * 2005-06-30 2012-03-27 Armstrong, Quinton Co. LLC Methods, systems, and computer program products for role- and locale-based mobile user device feature control
US20070011732A1 (en) * 2005-07-05 2007-01-11 Yang-Hung Peng Network device for secure packet dispatching via port isolation
US7571483B1 (en) * 2005-08-25 2009-08-04 Lockheed Martin Corporation System and method for reducing the vulnerability of a computer network to virus threats
US20070079366A1 (en) * 2005-10-03 2007-04-05 Microsoft Corporation Stateless bi-directional proxy
US8484725B1 (en) * 2005-10-26 2013-07-09 Mcafee, Inc. System, method and computer program product for utilizing a threat scanner for performing non-threat-related processing
US8347373B2 (en) 2007-05-08 2013-01-01 Fortinet, Inc. Content filtering of remote file-system access protocols
US8468589B2 (en) 2006-01-13 2013-06-18 Fortinet, Inc. Computerized system and method for advanced network content processing
US8136162B2 (en) 2006-08-31 2012-03-13 Broadcom Corporation Intelligent network interface controller
US8042184B1 (en) 2006-10-18 2011-10-18 Kaspersky Lab, Zao Rapid analysis of data stream for malware presence
US8863286B1 (en) 2007-06-05 2014-10-14 Sonicwall, Inc. Notification for reassembly-free file scanning
KR101323852B1 (en) * 2007-07-12 2013-10-31 삼성전자주식회사 Virtual Firewall system and the control method for using based on commonness security policy
US7991723B1 (en) 2007-07-16 2011-08-02 Sonicwall, Inc. Data pattern analysis using optimized deterministic finite automaton
US8307443B2 (en) 2007-09-28 2012-11-06 Microsoft Corporation Securing anti-virus software with virtualization
JP4827972B2 (en) * 2007-09-28 2011-11-30 日本電信電話株式会社 Network monitoring device, network monitoring method, and network monitoring program
US20090178140A1 (en) * 2008-01-09 2009-07-09 Inventec Corporation Network intrusion detection system
US20090182818A1 (en) * 2008-01-11 2009-07-16 Fortinet, Inc. A Delaware Corporation Heuristic detection of probable misspelled addresses in electronic communications
US8291496B2 (en) * 2008-05-12 2012-10-16 Enpulz, L.L.C. Server based malware screening
US8813221B1 (en) 2008-09-25 2014-08-19 Sonicwall, Inc. Reassembly-free deep packet inspection on multi-core hardware
US9769149B1 (en) 2009-07-02 2017-09-19 Sonicwall Inc. Proxy-less secure sockets layer (SSL) data inspection
US8949989B2 (en) 2009-08-17 2015-02-03 Qualcomm Incorporated Auditing a device
US8544089B2 (en) * 2009-08-17 2013-09-24 Fatskunk, Inc. Auditing a device
US8375442B2 (en) * 2009-08-17 2013-02-12 Fatskunk, Inc. Auditing a device
US8370935B1 (en) * 2009-08-17 2013-02-05 Fatskunk, Inc. Auditing a device
US9021251B2 (en) * 2009-11-02 2015-04-28 At&T Intellectual Property I, L.P. Methods, systems, and computer program products for providing a virtual private gateway between user devices and various networks
US8910288B2 (en) 2010-02-05 2014-12-09 Leidos, Inc Network managed antivirus appliance
US8782794B2 (en) 2010-04-16 2014-07-15 Bank Of America Corporation Detecting secure or encrypted tunneling in a computer network
US8595840B1 (en) 2010-06-01 2013-11-26 Trend Micro Incorporated Detection of computer network data streams from a malware and its variants
CN101877710B (en) * 2010-07-13 2012-10-17 成都市华为赛门铁克科技有限公司 Proxy gateway anti-virus implement method, pre-sorter and proxy gateway
US10025928B2 (en) * 2011-10-03 2018-07-17 Webroot Inc. Proactive browser content analysis
KR101585936B1 (en) * 2011-11-22 2016-01-18 한국전자통신연구원 System for managing virtual private network and and method thereof
CN102594623B (en) * 2011-12-31 2015-07-29 华为数字技术（成都）有限公司 The data detection method of fire compartment wall and device
US8973138B2 (en) * 2012-05-02 2015-03-03 The Johns Hopkins University Secure layered iterative gateway
CN103679021B (en) * 2012-09-17 2017-12-26 腾讯科技（深圳）有限公司 Virus scan method and virus scan device
US11126720B2 (en) * 2012-09-26 2021-09-21 Bluvector, Inc. System and method for automated machine-learning, zero-day malware detection
CN104243424B (en) * 2013-06-19 2018-04-06 腾讯科技（深圳）有限公司 Data download method, device and system
US9971714B2 (en) * 2015-05-05 2018-05-15 Oath Inc. Device interfacing
JP2017147575A (en) * 2016-02-16 2017-08-24 富士通株式会社 Control program, controller, and control method
US11128646B1 (en) * 2018-04-16 2021-09-21 Trend Micro Incorporated Apparatus and method for cloud-based accelerated filtering and distributed available compute security processing
CN109818824B (en) * 2018-12-29 2020-12-29 东软集团股份有限公司 Message forwarding test method, device, storage device and program product
CN115208690A (en) * 2022-08-09 2022-10-18 中国光大银行股份有限公司 Screening processing system based on data classification and classification

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5414833A (en) 1993-10-27 1995-05-09 International Business Machines Corporation Network security system and method using a parallel finite state machine adaptive active monitor and responder
US5623600A (en) 1995-09-26 1997-04-22 Trend Micro, Incorporated Virus detection and removal apparatus for computer networks
US6275942B1 (en) 1998-05-20 2001-08-14 Network Associates, Inc. System, method and computer program product for automatic response to computer system misuse using active response modules
EP1282283A2 (en) 2001-07-26 2003-02-05 Networks Associates Technology, Inc. Malware scanning using a network bridge

Family Cites Families (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1251913B (en) * 1965-03-20 1967-10-12 Dragerwerk Hemr & Bernh Drager, Lübeck Ventilation device
US4558413A (en) * 1983-11-21 1985-12-10 Xerox Corporation Software version management system
US4714992A (en) * 1985-11-26 1987-12-22 International Business Machines Corporation Communication for version management in a distributed information service
US5802320A (en) * 1995-05-18 1998-09-01 Sun Microsystems, Inc. System for packet filtering of data packets at a computer network interface
US6151643A (en) * 1996-06-07 2000-11-21 Networks Associates, Inc. Automatic updating of diverse software products on multiple client computer systems by downloading scanning application to client computer and generating software list on client computer
US6243815B1 (en) * 1997-04-25 2001-06-05 Anand K. Antur Method and apparatus for reconfiguring and managing firewalls and security devices
US5948104A (en) * 1997-05-23 1999-09-07 Neuromedical Systems, Inc. System and method for automated anti-viral file update
US6098172A (en) 1997-09-12 2000-08-01 Lucent Technologies Inc. Methods and apparatus for a computer network firewall with proxy reflection
US6141749A (en) * 1997-09-12 2000-10-31 Lucent Technologies Inc. Methods and apparatus for a computer network firewall with stateful packet filtering
US6119165A (en) * 1997-11-17 2000-09-12 Trend Micro, Inc. Controlled distribution of application programs in a computer network
US6035423A (en) * 1997-12-31 2000-03-07 Network Associates, Inc. Method and system for providing automated updating and upgrading of antivirus applications using a computer network
US5987610A (en) * 1998-02-12 1999-11-16 Ameritech Corporation Computer virus screening methods and systems
US6052531A (en) * 1998-03-25 2000-04-18 Symantec Corporation Multi-tiered incremental software updating
US6167407A (en) * 1998-06-03 2000-12-26 Symantec Corporation Backtracked incremental updating
US7133400B1 (en) * 1998-08-07 2006-11-07 Intel Corporation System and method for filtering data
US6400707B1 (en) * 1998-08-27 2002-06-04 Bell Atlantic Network Services, Inc. Real time firewall security
US20020013911A1 (en) * 1998-11-24 2002-01-31 Cordella Robert H. Compact hardware architecture for secure exchange of information and advanced computing
US20010039624A1 (en) * 1998-11-24 2001-11-08 Kellum Charles W. Processes systems and networks for secured information exchange using computer hardware
US6578147B1 (en) * 1999-01-15 2003-06-10 Cisco Technology, Inc. Parallel intrusion detection sensors with load balancing for high speed networks
US6886102B1 (en) * 1999-07-14 2005-04-26 Symantec Corporation System and method for protecting a computer network against denial of service attacks
US6721424B1 (en) * 1999-08-19 2004-04-13 Cybersoft, Inc Hostage system and method for intercepting encryted hostile data
US6598034B1 (en) 1999-09-21 2003-07-22 Infineon Technologies North America Corp. Rule based IP data processing
US7076650B1 (en) * 1999-12-24 2006-07-11 Mcafee, Inc. System and method for selective communication scanning at a firewall and a network node
US7069432B1 (en) * 2000-01-04 2006-06-27 Cisco Technology, Inc. System and method for providing security in a telecommunication network
AU2001298116A1 (en) * 2000-01-18 2009-07-29 Telcordia Technologies, Inc. Method and systems for identifying the existence of one or more unknown programs in a system
US6925572B1 (en) * 2000-02-28 2005-08-02 Microsoft Corporation Firewall with two-phase filtering
US6496935B1 (en) * 2000-03-02 2002-12-17 Check Point Software Technologies Ltd System, device and method for rapid packet filtering and processing
US6519703B1 (en) * 2000-04-14 2003-02-11 James B. Joyce Methods and apparatus for heuristic firewall
US20020069356A1 (en) * 2000-06-12 2002-06-06 Kwang Tae Kim Integrated security gateway apparatus
US6654373B1 (en) * 2000-06-12 2003-11-25 Netrake Corporation Content aware network apparatus
US7047561B1 (en) * 2000-09-28 2006-05-16 Nortel Networks Limited Firewall for real-time internet applications
EP1368726A4 (en) * 2001-02-06 2005-04-06 En Garde Systems Apparatus and method for providing secure network communication
US7002974B1 (en) * 2001-03-28 2006-02-21 Netrake Corporation Learning state machine for use in internet protocol networks
US6957258B2 (en) * 2001-03-28 2005-10-18 Netrake Corporation Policy gateway
US7095716B1 (en) * 2001-03-30 2006-08-22 Juniper Networks, Inc. Internet security device and method
US7047564B2 (en) * 2001-10-31 2006-05-16 Computing Services Support Solutions, Inc. Reverse firewall packet transmission control system
US20030110379A1 (en) * 2001-12-07 2003-06-12 Tatu Ylonen Application gateway system, and method for maintaining security in a packet-switched information network
US6633985B2 (en) * 2002-02-11 2003-10-14 Polycom, Inc. System and method for videoconferencing across networks separated by a firewall

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5414833A (en) 1993-10-27 1995-05-09 International Business Machines Corporation Network security system and method using a parallel finite state machine adaptive active monitor and responder
US5623600A (en) 1995-09-26 1997-04-22 Trend Micro, Incorporated Virus detection and removal apparatus for computer networks
US6275942B1 (en) 1998-05-20 2001-08-14 Network Associates, Inc. System, method and computer program product for automatic response to computer system misuse using active response modules
EP1282283A2 (en) 2001-07-26 2003-02-05 Networks Associates Technology, Inc. Malware scanning using a network bridge

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7512808B2 (en) 2003-08-29 2009-03-31 Trend Micro, Inc. Anti-computer viral agent suitable for innoculation of computing devices
US7287278B2 (en) 2003-08-29 2007-10-23 Trend Micro, Inc. Innoculation of computing devices against a selected computer virus
US8291498B1 (en) 2003-08-29 2012-10-16 Trend Micro Incorporated Computer virus detection and response in a wide area network
US7565550B2 (en) 2003-08-29 2009-07-21 Trend Micro, Inc. Automatic registration of a virus/worm monitor in a distributed network
WO2005022441A3 (en) * 2003-08-29 2005-04-14 Trend Micro Inc Network traffic management by a virus/worm monitor in a distributed network
WO2005022441A2 (en) * 2003-08-29 2005-03-10 Trend Micro Incorporated Network traffic management by a virus/worm monitor in a distributed network
US7523493B2 (en) 2003-08-29 2009-04-21 Trend Micro Incorporated Virus monitor and methods of use thereof
US7386888B2 (en) 2003-08-29 2008-06-10 Trend Micro, Inc. Network isolation techniques suitable for virus protection
WO2005086455A2 (en) * 2004-03-01 2005-09-15 Everbee Networks Method, system and device for time-delaying a data packet flow
WO2005086455A3 (en) * 2004-03-01 2005-12-29 Everbee Networks Method, system and device for time-delaying a data packet flow
EP1737172A4 (en) * 2004-05-31 2008-02-20 Japan Science & Tech Agency Relay device, packet filtering method, and packet filtering program
US7633957B2 (en) 2004-05-31 2009-12-15 Japan Science And Technology Agency Relay device, packet filtering method, and packet filtering program
EP1737172A1 (en) * 2004-05-31 2006-12-27 Japan Science and Technology Agency Relay device, packet filtering method, and packet filtering program
WO2007038517A1 (en) * 2005-09-26 2007-04-05 Wiresoft, Inc. Methods, software and apparatus for detecting and neutralizing viruses from computer systems and networks
US7761915B2 (en) 2005-12-28 2010-07-20 Zyxel Communications Corp. Terminal and related computer-implemented method for detecting malicious data for computer network
EP1804457A1 (en) * 2005-12-28 2007-07-04 Zyxel Communications Corporation Terminal and related computer implemented method for detecting malicious data for computer network
US7751397B2 (en) 2006-05-05 2010-07-06 Broadcom Corporation Switching network employing a user challenge mechanism to counter denial of service attacks
EP1853025A1 (en) * 2006-05-05 2007-11-07 Broadcom Corporation Packet routing with payload analysis, encapsulation and service module vectoring
TWI387281B (en) * 2006-05-05 2013-02-21 Broadcom Corp Switching network employing virus detection
US7596137B2 (en) 2006-05-05 2009-09-29 Broadcom Corporation Packet routing and vectoring based on payload comparison with spatially related templates
EP1853022A1 (en) * 2006-05-05 2007-11-07 Broadcom Corporation Switching network employing virus detection
US7895657B2 (en) 2006-05-05 2011-02-22 Broadcom Corporation Switching network employing virus detection
US7948977B2 (en) 2006-05-05 2011-05-24 Broadcom Corporation Packet routing with payload analysis, encapsulation and service module vectoring
US8072976B2 (en) 2006-05-05 2011-12-06 Broadcom Corporation Packet routing and vectoring based on payload comparison with spatially related templates
CN101068206B (en) * 2006-05-05 2011-12-14 美国博通公司 Grouping exchange, network node, packet exchanging structure and data packet routing method
US8223965B2 (en) 2006-05-05 2012-07-17 Broadcom Corporation Switching network supporting media rights management
GB2466755B (en) * 2007-10-31 2013-01-30 Bank Of America Executable download tracking system
GB2466755A (en) * 2007-10-31 2010-07-07 Bank Of America Executable download tracking system
WO2009059206A1 (en) * 2007-10-31 2009-05-07 Bank Of America Corporation Executable download tracking system
US8959624B2 (en) 2007-10-31 2015-02-17 Bank Of America Corporation Executable download tracking system
US8782209B2 (en) 2010-01-26 2014-07-15 Bank Of America Corporation Insider threat correlation tool
US8800034B2 (en) 2010-01-26 2014-08-05 Bank Of America Corporation Insider threat correlation tool
US8799462B2 (en) 2010-01-26 2014-08-05 Bank Of America Corporation Insider threat correlation tool
US9038187B2 (en) 2010-01-26 2015-05-19 Bank Of America Corporation Insider threat correlation tool
US8544100B2 (en) 2010-04-16 2013-09-24 Bank Of America Corporation Detecting secure or encrypted tunneling in a computer network
US8719944B2 (en) 2010-04-16 2014-05-06 Bank Of America Corporation Detecting secure or encrypted tunneling in a computer network
US8793789B2 (en) 2010-07-22 2014-07-29 Bank Of America Corporation Insider threat correlation tool

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US9392002B2 (en) 2016-07-12

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